From 8e9963941902e0e1ab553761dfb460fa32091740 Mon Sep 17 00:00:00 2001
From: Kumar Gala <kumar.gala@linaro.org>
Date: Thu, 15 Apr 2021 09:31:08 -0500
Subject: newlib-nano: Add option to copy libs into target

Add an option that will install a copy of newlib-nano lib*.a file in
the target dir but renamed with a nano.a suffix (eg: libc_nano.a) as
some default nano.spec files from newlib expect this setup.

Additionally the newlib-nano version of newlib.h will get copied to
include/newlib-nano/newlib.h.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>

diff --git a/config/comp_libs/newlib-nano.in b/config/comp_libs/newlib-nano.in
index 0138a7f..0d80c89 100644
--- a/config/comp_libs/newlib-nano.in
+++ b/config/comp_libs/newlib-nano.in
@@ -18,6 +18,17 @@ config NEWLIB_NANO_GCC_LIBSTDCXX
       This option compiles an additional target libstdc++ for use with
       newlib-nano.
 
+config NEWLIB_NANO_INSTALL_IN_TARGET
+    bool
+    prompt "Additionally install newlib-nano libs into TARGET dir"
+    help
+      This option will install a copy of newlib-nano lib*.a file in the target
+      dir but renamed with a nano.a suffix (eg: libc_nano.a) as some default
+      nano.spec files from newlib expect this setup.
+
+      Additionally the newlib-nano version of newlib.h will get copied to
+      include/newlib-nano/newlib.h.
+
 # maybe older versions of newlib will support it too, but this
 # needs to be checked
 config NEWLIB_NANO_CXA_ATEXIT
diff --git a/scripts/build/companion_libs/350-newlib_nano.sh b/scripts/build/companion_libs/350-newlib_nano.sh
index 65aa8b0..16fb417 100644
--- a/scripts/build/companion_libs/350-newlib_nano.sh
+++ b/scripts/build/companion_libs/350-newlib_nano.sh
@@ -216,6 +216,31 @@ EOF
     CT_EndStep
 
     do_cc_libstdcxx_newlib_nano
+
+    if [ "${CT_NEWLIB_NANO_INSTALL_IN_TARGET}" = "y" ]; then
+        CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}/${CT_TARGET}/include/newlib-nano"
+        CT_DoExecLog ALL cp -f "${CT_PREFIX_DIR}/newlib-nano/${CT_TARGET}/include/newlib.h" \
+                               "${CT_PREFIX_DIR}/${CT_TARGET}/include/newlib-nano/newlib.h"
+        CT_IterateMultilibs newlib_nano_copy_multilibs copylibs
+    fi
+}
+
+newlib_nano_copy_multilibs()
+{
+    local nano_lib_dir="${CT_PREFIX_DIR}/newlib-nano"
+    local multi_flags multi_dir multi_os_dir multi_os_dir_gcc multi_root multi_index multi_count
+
+    for arg in "$@"; do
+        eval "${arg// /\\ }"
+    done
+
+    for lib_a in "${nano_lib_dir}/${CT_TARGET}/lib/${multi_dir}/"*.a; do
+       if [ -f ${lib_a} ] && [ ! -L ${lib_a} ]; then
+          _f=$(basename "${lib_a}")
+          CT_DoExecLog ALL cp -f "${lib_a}" \
+                                 "${CT_PREFIX_DIR}/${CT_TARGET}/lib/${multi_dir}/${_f%.*}_nano.a"
+       fi
+    done
 }
 
 fi
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